Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

B How does space expand?

  1. Apr 18, 2017 #1
    how can the universe be expanding if matter nor mass can be created?
     
  2. jcsd
  3. Apr 18, 2017 #3

    Chalnoth

    User Avatar
    Science Advisor

    Because the expansion doesn't involve creating matter. It's just existing matter getting further apart.

    That said, matter/mass can certainly be created or destroyed. Mass is a form of energy, and other forms of energy can be converted to mass under the right conditions. When heavy particles decay or matter and anti-matter meet and are annihilated, mass is also destroyed.
     
  4. Apr 26, 2017 #4

    Fervent Freyja

    User Avatar
    Gold Member

    The truth, there is no satisfying explanation. They really don't understand the mechanics behind how space expands... :cry:
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: How does space expand?
  1. Does Space Expand? (Replies: 176)

  2. How does Time expand? (Replies: 12)

Loading...